Digestive System (1)

 Digestive System Introduction v  The respiratory and circulatory systems work together to provide cells with the Oxygen they need for cellular Respiration. v  Cells also need glucose for cellular respiration. Glucose is a simple sugar that comes from the food we eat. v  To get glucose from food, digestion must occur. This process … Read more

Excretion

–2/”>a >DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”> :In Plants , the process by which animals and plants rid themselves of waste products and of the nitrogenous by-products of Metabolism. Through excretion organisms control osmotic pressure—the balance between inorganic ions and water—and maintain acid-base balance. The process thus promotes homeostasis, the constancy of the … Read more